According to the airlines, the owner was using the phone on a flight from Lismore to Sydney when it began to emit “a significant amount of dense smoke, accompanied by a red glow.” The phone’s owner had to drop the phone because of the intense heat, according to a Fox News story.

No one was injured, Regional Express said.

The Australian Transport Safety Bureau is looking into incident with the Civil Aviation Safety Authority. ATSB is examining the partial melted phone to figure out what might have caused the self combustion.

Apple told Fox News that it was looking into the matter.

“We have no previous records of iPhones undergoing spontaneous self-ignition,” he said.